The National Basketball Association (NBA) has fined Brooklyn Nets guard Kyrie Irving $50,000 for violating the safety protocols, the league said on Friday. Notably, Irving attended a crowded indoor party without wearing a mask, reported AFP.

The player was put under investigation after a video surfaced on social media in which he was seen attending a birthday party with no mask.

The NBA protocols suggest players to not attend indoor gatherings of more than 15 people.

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Irving has not played since January 5 for what the Nets have said are “personal reasons”. Although, he will stay eligible to return to the game on Saturday after a five-day quarantine period, provided he continues to test negative for the virus, the NBA said in a statement.

Irving will also lose salary earned during his quarantine period.

The Nets acquired Houston Rockets star James Harden this week to form a heavyweight line-up alongside Irving and Kevin Durant, who returned to play this season after a year-long injury absence.

The Nets are sixth in the Eastern Conference standings, with seven wins and six defeats.